| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a rattle between a mast for mounting a rock drill, and a guide mounting for supporting the mast in such a manner as to be movable forward and backward. SOLUTION: This mast-rattle prevention device comprises mast clamps 21a and 21b for fixing the mast 9 for supporting the rock drill in such a manner as to be movable forward and backward, and the guide mounting 13 for supporting the mast 9 in such a manner as to be movable forward and backward. The mast 9 and the guide mounting 13 are fixed by the mast clamps 21a and 21b during drilling work by the rock drill. COPYRIGHT: (C)2007,JPO&INPIT
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